Drum wassembly



y 1960 J. H. WILSON 2,944,790

DRUM ASSEMBLY Filed Nov. 27, 1956 7 Sheets-Sheet 1 L 511 x N INVLNTOR. gJOHN HART WILSON 8 2 H15 AGENT y 1960 J. H. WILSON 2,944,790

' DRUM ASSEMBLY Filed Nov. 27, 1956 7 she -s 3 I36 2 M0 M3 i INVENTOR.

JOHN HART WILSON HIS AGENT July 12, 1960 J. H. WILSON DRUM ASSEMBLY.

m 4 s a mm. W m m e A v H 7 h 0 M Filed Nov. 27, 1956 July 12, 1960 J.H. WILSON 2,944,790

DRUM ASSEMBLY Filed .Nov. 27, 1956 '7 Sheets-Sheet 5 HIS AGENT y 1960 J.H. WILSON 2,944,790

DRUM ASSEMBLY Filed Nov. 21, 1956 7 sheetwheet 6 S W/flw ii Io .4 ".215a nuinizz/nza/ P INVENTOR.

JOHN HART WILsON BY 7" V IH T July 12, 1960 ,J, WILSCN 2,944,790

DRUM ASSEMBLY' Filed Nov. 27, 1956 7 Sheets-Sheet 7 INVENTOR. JOHN HARTWmsou w ww United States Patent 7 2,944,790 I DRUM VAVSSEMBLY John anWilson, P.o. Box 2445, wichita Falls, Tex. Filed Nov. 27, 1956, Ser. No.624,593

6 Claims. c1. "254 187) This invention relates to improvements in drumassemblies, and more particularly to drum assemblies using fluidactuated clutches on each end of the drum shaft thereof to engage thedrum with the prime mover.

Various drum assemblies have been .proposed heretofore, but these forthe most part, required'a rotatable fluid connection on each end, so asto direct the'fluid actuating media for the clutches, from a source ofpressure to each clutch. V

Drum assemblies in use heretofore, have required the removing of eachfluid clutch in order to replace or repair the brake rings. I N

In the present invention, the drum structure is so de signed thatthefluid being directed, to the respective fluid actuated clutches, oneach end of the drum shaft and' exterior of the drum shaft bearings, isconducted into one end 'of the drum shaft through a rotary fluid c'on-fnection; thence through the drum shaft only a sutucient distance for thefluidto pass throughthe'bearings, then through auxiliary conduits to apoint adjacent and inside of the second drum bearing, where theconduitipasses the fluidback through the shaft and beneath the drumhearings to a point exterior of the drum bearings, where a'fluidconnection is connected'between theshaft and' V the fluid actuatedclutch. .A further conduit connects the rotary fluid connection to'. afluid actuatedgclutch on the shaft adjacent the rotary fluid coupling; v

An object of this'inventionisto provide a drum assembly, thebrake'ringsof which maybe readily'fremoved.

and;replaced without removing the entire fluid clutch unit from the drumshaft, or removing any press fit or shrink" fit parts, such as bearings,from the shafts."

Another object of the invention is to provide-a drum shaft assemblywherein the fluid actuating media may be a directed from one end of theshaft to'a'fluidaactuated clutch, exterior of 'each of the drumbearings, without the drum shaft being axially drilled from end to end.

Still another object of the invention is to provide a drumand shaftassembly, through one end of which -a' coolantysuch as water is passed,"through a rotary coupling at one end of the shaft, then through thewater cooled brake rings, and be returned to and through the samelrotarycoupling to complete the circulation cycle.

coupling at the other end of the assembly for introducing a fluid underpressure to actuate the fluid actuated clutches which are on each end ofthe drum shaft, but exterior of the drum bearings; r

Fig. ,2 is an exploded view of the drum shaft assembly with partsremoved, parts broken away, with other parts shown in section, and withthe brake flanges of the drum being shown-in exploded relation to showthe manner in which the brake rings are assembled over the hubs of theclutch units; 7

Fig. 3 is a fragmentary, longitudinal, sectional view through an endportion of the drum assembly, on an enlarged scale, showingpartsfthereof in elevation, and

showing the rotary fluid coupling through which fluid Fig. 5 is asectional view taken on the line 5-5 of Fig. 4, looking in the directionindicated by the arrows; Fig. 6 is a sectional view taken on the line 66of Fig. 4, looking in the direction indicated by the arrows;

Fig. .7 is a sectional view takenon the line 7-7 of Fig. 4, looking inthe direction indicated by the arrows;"

Fig. 8 is asec'tional view taken on the line 8-8 of Fig. 3, lookinginthe direction'indicated by the arrows}: Fig. 9is a fragmentary,sectional view of'a modified 1 form of the drum assembly embodying theinvention,

utilizing a drive sprocket of a larger outside diameter;

than the inside diameter of the brake'ring; l I Y at" the opposite end,thus avoiding the combination of water andair in the same rotarylcoupling.

.With these objects in mind, and others which will become manifest asthe description proceeds, reference is to be had to the accompanyingdrawings in which like reference characters designate like parts in theseveral views thereof, in which:

Fig. 1 is an elevational view ofa assembly withing a:-coolant,i such aswater, and showing arot'ary'fluid Fig. 10 is a fragmentary,'sectionalview of a portion Fig. 11 is a sectional view of the modifiedvform ofdrum;

'With more detailed reference to the drawing, the numeral 1 designatesgenerally a drum assembly, which comprisesa drum barrel 2, and brakering members 4 and 6. The brake ring members 4 and 6 are bolted onto therespective drumflange members 8 and 10, by means of bolts 12 and 14,respectively. "The drum barrel 2 is secured to the respective flanges,at each end thereof, as by welding, as indicated at W. 5 The drumflanges 8 and 10 are each keyed to the drum shaft by keys 18 and 20,respectively. The drum flanges 8 and 10 are spaced apart a sufl'icientdistance to provide for a drum barrel of to spool the desired amount ofcable.

v Each' end of the-drum shaft-is provided with a rotaryfluid-coupling,designatedat 21 and 100, respectively. Coupling 21, asshown at the. extreme left in Figs. 1- and- 3, is a rotary fluidcoupling for conveying afluid media selectively, underpressure, to therespective fluid 'actu-- 'atedflclutches designated generally :bythe'numerals" 22 and 24. The fluid is passed into and throughjrotaryfluid coupling 21 by conduits 26 and'28, respectively.- The fluidpassing through rotary fluid coupling 21 passesinto conduits 30 land 32,respectively, with "the conduit -30 interconnecting with'a conduit 34which is secured in the inner end'of fitting 36; The conduit 34 has afitting38' thereon, which fitting interconnects'with flexible ho'se'40and which leads to a quick release valve 42, so fluid under pressure canbe directed from conduits'26, 30, and 34 and hose 40 into axiallyexpansible clutch actuating tube 44, which tube expands axially to causeinterengagement of clutch plates 46 and 48, as will best be seen in Fig.3. x a The clutch shown in Fig. 3- is of the character which has a hubportion 50 keyed to the shaft 16, by a'key 5-2,

while the key and hub can be removed, this is quite difiicult to do inthe field, and requires hours of work and special tools, whereas, toremove the-bolts 23, which-bolt' a size theannular clutch ringto the airtube holding plate 23a, which, upon disconnection of air hose from quickrelease valve 42, may be removed longitudinally from hub 50, whereupon,annular ring and friction elements 46 and 48 may be removed to giveaccess to cap screws *which bolt annularclutchback plate 56 to hub 50.With these cap screws and the clutch back plate 56, removed, access ishad to cap'screws 54 which bolt annular adapter ring 64 to adapter plate58, which will enable the removal ofadapter'ring and annular drive ring62, as a'uni-t; which is a-simple operation as compared to that ofremoving-the hub and the entire clutch assembly.

Bearings 23w are mounted on shaft 16 adjacent hub 50 (Fig. 3) and arefixed against longitudinal movement relative to the: hubSfl. Asecond hub63 is mounted on bearings'23e, which hub 63 is journaled on saidbearings for rotation on shaft 16. Adapter plate 58 is bolted to hub" 63by means ofbolts 65, which bolts also secure sprocket S to the hub 63.-The adapter plate 58, adapter ring, 60 and drive ring 62, together withfriction element 48 and sprocket S will rotate in unison with rotatablehub 63. When air tube 44 causes engagement of friction elements 46 and48, hubs 5 0 and 63 will turn in unison, however, when friction elements46 and 48 are out of engagement, hub- Stlwill rotate with shaft-16, and,the shaft 16' will turn in bearings 23e within hub 63.

Bearings 24a are mounted onshaft 16 adjacent hub 24c and arefixedagainst longitudinal movement relative to hub 240. A second hub 63ais journaled onbearings Me, which hub 63a isjournaled on said bearingsfor rotation on shaft 16. Adapter, plate 136 is bolted to hub 63a bymeans. ofbolts 24b, which bolts also secure sprocket S to hub 63a. Theadapter plate 136, adapter ring 14f), and drive. ring 141, together withfriction elements 143, andsprocket S will rotate in unison withrotatablehub 63a, when air tube 96 causes engagement of frictionelements 143 and 145, hubs 24c and 63a will turn in unison, however,when friction elements 143 and-145 are out of engagement, hub 240 Willrotate with shaft 16. and shaft 16 willturn in bearings 24:: within hub63a.

The adapter plate 58 has a smaller outside diameter than the smallestinside diameter of the annular brake ring4, so upon removing the splitchain guard elements G from around sprockets S and removing the drumassembly from the drum-support post P, and with the annular drive rings60 and 62' removed, and with the chain guard G removed, and upon removalof'bolts 12, the

brake ring 4 may be passed overthe-clutch hub 5t} and easily removed, asshown in Fig. 2.

Thet rotary fluid coupling 21 has dual conduits 26 and 28 leadingthereinto for supplying air to the respective clutches 22 and 24,Theconduit 28; connects with conduit 32, through which air passes, whichconduit interconnects with a pipe 64, which pipe is secured into anadapter fltting 36 which is fitted within an axial bore 66 in drumshaft16, The pipe 64 has, a fitting 68 on the end thereof which isaxially and transversely drilled to interconnect the pipe 64 withpipef74. However, the bore 66 need-only be in the end of the drum shafta suflicient depth to passthrough bearing '70. The shaft 16 istransversely drilled, as indicated at .72, so the. transverse hole willregister with, the; transversev hole drilled in fitting 68,

whereupon, the pipe '74fis screw'threaded into fitting 68 so astoconveyair thereinto and into a conduit '76 which leads longitudinally alongshaft 16 and through drum flange .10, thence through L 7am into a pipe89, which pipe.:is, screw threaded into a transverse hole 82 formed inshaft 16inward of'bearing 8,4. 7

Where the clutch actuating fluid passes through the drum barrel, a steeltube 77 is welded to each drum end, so as to forma passage therethrough.The high'pressure hose 76, which conducts this clutch actuating fluid,is surrounded by a rubberor rubber and fabric sleeve 79, which sleevefillsv the; space. between the high pressure hose 76 and the. steeltube; 77'whichi supports it, andv forms a con duit through which it canbe drawn. The rubber sleeve 79 over the high pressure hose is of suchthickness that it will approximately fill the space in the steel tubeand the inside of the steel tube is sufiiciently large that the hoseconnection on the end of the high pressure hose 76 can be drawn throughthe steel tube 77, thus it can be withdrawn for repairs without removingthe drum from the rig,

It is preferable to have a longitudinal bore drilled in shaft 16 at theend opposite rotary fluid seal 21, so that the longitudinal hole 86,which is preferably drilled ofi center, will pass interiorly of bearing84 and intersect transverse hole 82. A plug 88 closes the outer end ofbore 86, as will best be seen in Fig. 4, and a further transverse hole98 is drilled into shaft 16 so as to intersect longitudinal bore 86exterior of air actuated clutch 24. A pipe 92 is screw threaded intotransverse hole and has a flexible hose 94 connected thereto, which hoseconducts air .under pressure through quick release valve 98 into axiallyexpansible tube 96, which actuates clutch 24. The quick release valve 98is provided on clutch 24 to quickly release air from axially expansibletube 96, as will best be seen in Fig. 4.

A rotary fluid seal 100 is secured to the endof shaft 16 opposite therotary fluid coupling 21. The rotary fluid seal 100 has inlet pipe 104leading thereinto and outlet pipe 102 leading therefrom. The rotarycoupling 100" is held on the shaft 1 6,by union connection 106, whichcauses passage 108 in rotary seal 16%} to register with pas sage 110 inshaft 16, and passage 112 in rotary seal lllt) to register with passage114 inshaft 16, so a coolant, such;

as water, may be passed through pipe 104 into passage 108, then throughpassage 110, out through lateral conduits7116 and 118 into annularpassageslZll and 122 of the respective brake rings 4 and 6, with theoutlet water returning through conduits 124 and 126, which intercon- Inect with the opposite side' of the respective annular passages and 122,into pipe 127a, thence into passage 114 and out through pasages 112 intooutlet pipe 102 Conduits 124 and 126 arelconnected to the, annularpassage formed in the brake; ring by the respective unions 7 It will beseen that air is directed to a clutch on each end of said drum shaft,without drilling the drum shaft from end to end, and that water isdirected from-one end of the drum shaft intoboth brake rings withoutdrilling the shaft from end to end, and yet the systems are so -corelated'that, by removing unions 128' and 130, and by removal of bolts12, which bolt the brake ring 4 to flange 8, and by removing chainguards designated at G, the

brake ring- 4 may be passed over clutchadapter plate 58,

from which component parts of the clutch havebeen re-.

moved, without disturbing the-hub portion 50 of thev clutchwhich iskeyed to the'shaft 16, it being necessary only to remove the chain fromthe sprockets and to remove the drum from-the; support posts upon whichit ismounted, likewise, the brake ring 6 may be removed by removingbolts 14, 'andunions132and- 134, After, the brake ring 6 is-removed,it-may be passed over the adapter plate 136, after the friction elementassembly. of the clutch 24 has been removed from the adapter ring 136,by removal ofbolts 138, which hold the annular' ring to clutch assembly24, substantially in the same manner as set out for clutch22. Ri g 1.40is bolted in" sufficient space between the conduits: 127 andsvl27atso'repair or replacement.

moved from the hoisting drum and showing the inner portions of theclutches remaining on the shaft 16, there by enabling the change to bemade in a fraction of the time that would be required to change a brakering, which necessitates the dismantling of the clutch members and thereassembly thereof,

It isalso to be pointed out, that the high pressure hoses which carryboth air and water through the drum, can be removed, repaired and/orreplaced without removing the drumfrom the rig, because the flexiblehoses and the rubber sleeves surrounding the respective hose iscontained within a steel support tube and is flexible enough so that itcan be bent around and withdrawn from inside the guard H, bydisconnecting-the unions.

The chain guards G and H are split transversely, as will best be seen inFigs. 7 and 8, and it is preferable to use quicklyseparable wing nuts144 and hinge bolts 146 to secure the portions thereof together, so asto enable the chain guards to be separated quickly, so as not to retardor hinder the removal of the brake rings.

Modified form of invention a A modifiedform of the invention is shown inFigs." 9 and 10, wherein the clutch drive'sprocket 151 is of a largerexternal diameter thanthe largest internal diameter of the brake ring6a, and wherein provisionis made to remove the. annular sprocket 151,together with'the clutch elements, as will be more fully set outhereinafter, to enable the removal of the brake ring 6a from the drumflange 10a, and to enable the brake 6a to be passed outward oflf the endof shaft 164: without having toremove the clutch hub 50a from the shaft16a.

The present device has a clutch, designated generally at Mn, and which,by removing bolts 240 and 24p will enable the removal of an air tubeholding plate 24:

whereby the friction plate-elements 46a and 48a, as

well as the expansible clutch tube 44a may be removed,

if desired. a

Then, by removing cap screw 154, the sprocket 151 and clutch drive ring62a may be removed longitudinally P and with the chain guards H removed,the brake ring 6a may be moved off thelend' of shaft 16a for Fig. 10shows the clutch friction elements, as well as the annular sprocket 151,removed from their respective mounting plates, preparatory'to theremoval of brake ring 6d.

Having thus clearly shown and described the invention, what is claimedas new and desired to be secured by Letters Patent is:

1. A drum assembly comprising a shaft, a drum having at least one water.cooled brake ring assembly, which brake ring assembly is attachablyconnected to said drum, said drum being mounted on said shaft, an airactuated clutch, which clutch has a, first hub rotatably mounted on saidshaft, which shaft extends axially .of said drum assembly and outwardfrom each end thereof, a second side diameter of said brake ringassembly, said clutch adapter plate being attachably secured to therotatable portion of said first hub of said clutch, an annular adapterring for said adapted plate, the outside diameter of which adapter ringis larger than the inside diameter of said brake ring assembly, whichannular adapter ring is attachably secured to said adapter plate, theinside diameter of said annular adapter ring beingtlarger than saidsecond hub portion of said clutch.

2. A drumassembly comprising a shaft, a drum having water cooled brakering assemblies, which brake ring assemblies are attachably connectedtotsaid drum, said drum being mounted on said shaft, a pair of airactuated clutches, each having a first hub rotatably mounted on saidshaft, which shaft extends axially of said drum assaid respective firsthubs of said clutches, an annular adapter ring for each of said adapterplates, the outside diameter of each being largerthan the insidediameter of the respective .brake ring assemblies, which annular"adapted rings are each attachably secured to the respective adapterplates, the inside diameter of each adapter ring being larger than therespective second hub portions of the respective clutches.

3. A drum assembly as defined in claim 2, wherein first and secondbearings are provided and in which bearings saiddrum shaft is journaled,said drum shaft being boredaxially from one end thereof less thanone-half itsl'ength, first" and second conduits for air within said boreand extending into said drum shaft, a rotary connector on said shaft toconvey air into said conduits in said shaft, a first air actuatedclutch, a second air actuated clutch, a conduit connected with the firstof said conduits and leading outward from and being connected to saidfirst air actuated clutch exterior of said first drum shaft bearing, thesecond of said conduits passing interiorly through said shaft and saidfirst bearing to a point intermediate said first and second bearings andnear said first bearing, a further conduit extending laterally from saidsecond conduit, said further conduit extending outside of said shaftlongitudinally through the barrel of hub portion of said clutch beingkeyed to said shaft 7 side diameter of which adapter plate is less thanthe insaid drum to a point intermediate saidfirst and said secondbearings and adjacent said second bearing, said shaft having a lateralpassage formed therein intermediate said first and said second bearingsand near said second bearing, said second conduit being connected withsaid lateral passage, said shaft having a second bore formed therein,which bore is eccentric with respect to the axis of said shaft and isless than one-half the length of said shaft, which eccentric boreconnects with said last mentioned lateral passage and passes throughsaid second bearing to 'a point longitudinally exterior thereof, saidshaft having a further lateral passage formed therein, which passageconnects with said eccentric bore, and conduit means 'said shaft has asecond axial bore formed therein in the 5. In a drum assembly having abrake ring attachably I secured to each end, of said drum, a shaftextending through said drum and mounting said drum thereon, a bearingmount on said shaft near each end of said drum, an air, actuated clutchmounted near each end of said drum shaft, each of which clutches has anadapter plate, mounted thereon, which adapter plates have an outsidediameter less than the internal diameter of the respective brakerings,an annular adapter ring, the outside diameter of which is greater thatthe internal diameterof .therespective brake rings, attachably securedto the outside of the respective adapter plates and to the drive, ringof the respective air actuated clutches, a pair of toothed sprocketsmounted on said shaft, one of which sprockets is connected in drivingrelation with each of said clutches, the outside diameter of therespective sprockets being less than the inside diameter of therespective, brake rings.

6. A drum assembly including a drum shaft, a drum barrel and spacedapart drum ends mounted on said shaft, each of which drum ends has ahollow, annular, water-cooled brake ring mounted thereon, first andsecond bearings journaling said shaft, said shaft having a bore formedaxially therein from one end thereof, which bore isless thanone-half thelength of said shaft, first and second conduits within said axial boreand extending into said shaft for passage of air therethrough, a rotaryvconnector on said shaft to convey air into said conduits in said shaft,a, first air actuated clutch mounted onlsaid shaft exterior of saidfirst bearing, a conduit connected with the, first ofsaid conduits andleading outward therefrom and being connected to, said first .airactuated clutch, the second of said conduits passing interiorlythroughsaid shaft and said first'bearing to a point intermediate saidfirst and said second bearings and nearsaid first bearing, a furtherconduit extending laterally from said second conduit, said furtherconduit extendof said drum to a point intermediate said, first and saidsecond bearings ,and adjacent said second bearing, said.

therein exterior of said second bearing, which further lateral passageconnects with said eccentric bore, and still further conduit meansconnecting with said further lateralpassage and extending outwardtherefrom, and a second air actuated clutch mounted on said drum shaftnear the end opposite said first air actuated clutch, said lastmentionedconduit being operatively connected to said second air actuatedclutch.

References Cited in the file of this patent UNITED STATES PATENTS847,572 7 Hanson Mar. 19, 1907 1,874,625 Rice Aug. 30, 1932 1,906,519Bloss May 2, 1933 2,240,741 Spalding May 6, 1941 2,304,350 Gillett Dec.8, 1942 2,468,388 Wilson Apr. 26, 1949 2,507,256 Keim 1 May 9, 19502,526,525 Young Oct. 17, 1950 2,628,814 Spalding Feb. 17, 1953 2,664,112lsenberg a Dec.,29, 1953 2,703,161 Keim Mar. 1,1955

' FOREIGN PATENTS 607,489 Germany Dec. 28, 1934 l l a

